12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697 |
- /* Copyright (C) 2006-2008 Constantin Kaplinsky. All Rights Reserved.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- //
- // Geometry.cxx
- //
-
- #include <rfb/LogWriter.h>
- #include <x0vncserver/Geometry.h>
-
- using namespace rfb;
-
- static LogWriter vlog("Geometry");
-
- StringParameter Geometry::m_geometryParam("Geometry",
- "Screen area shown to VNC clients. "
- "Format is <width>x<height>+<offset_x>+<offset_y>, "
- "more information in man X, section GEOMETRY SPECIFICATIONS. "
- "If the argument is empty, full screen is shown to VNC clients.",
- "");
-
- Geometry::Geometry(int fullWidth, int fullHeight)
- {
- recalc(fullWidth, fullHeight);
- }
-
- void Geometry::recalc(int fullWidth, int fullHeight)
- {
- m_fullWidth = fullWidth;
- m_fullHeight = fullHeight;
- m_rect.setXYWH(0, 0, fullWidth, fullHeight);
-
- // Parse geometry specification and save the result in m_rect.
- const char *param = m_geometryParam.getData();
- bool geometrySpecified = (strlen(param) > 0);
- if (geometrySpecified) {
- m_rect = parseString(param);
- }
- delete[] param; // don't forget to deallocate memory
- // allocated by StringParameter::getData()
- if (m_rect.is_empty()) {
- vlog.info("Desktop geometry is invalid");
- return; // further processing does not make sense
- }
-
- // Everything went good so far.
- vlog.info("Desktop geometry is set to %dx%d+%d+%d",
- width(), height(), offsetLeft(), offsetTop());
- }
-
- Rect Geometry::parseString(const char *arg) const
- {
- Rect result; // empty by default
-
- if (arg != NULL && strlen(arg) > 0) {
- int w, h;
- int x = 0, y = 0;
- char sign_x[2] = "+";
- char sign_y[2] = "+";
- int n = sscanf(arg, "%dx%d%1[+-]%d%1[+-]%d",
- &w, &h, sign_x, &x, sign_y, &y);
- if ((n == 2 || n == 6) && w > 0 && h > 0 && x >= 0 && y >= 0) {
- if (sign_x[0] == '-')
- x = m_fullWidth - w - x;
- if (sign_y[0] == '-')
- y = m_fullHeight - h - y;
- Rect partRect(x, y, x + w, y + h);
- result = partRect.intersect(m_rect);
- if (result.area() <= 0) {
- vlog.error("Requested area is out of the desktop boundaries");
- result.clear();
- }
- } else {
- vlog.error("Wrong argument format");
- }
- } else {
- vlog.error("Missing argument");
- }
-
- return result;
- }
|